Dbill-bit-pxtlling device



W. M. WILLIAMS.

DRILL BIT PULLING DEVICE.

APPLICATION FILED MAY 8, 19:7. RENEWED MAR. 25,1919.

Patented May 27, 1919.

A TTORA/EYS WILLIAM IVI. WILLIAMS,

OF 'IONOPAH, NEVADA, ASSIGNOR 0F ONE-HALF TO BURNEY LANGSTON, 0F RENO, NEVADA.

DRILL-BIT-PULLING DEVICE.

nsoarsa.

Specification of Letters Patent.

Patented May 27, 1919.

Application filed May 8, 1917, Serial No. 167,205. Renewed March 25, 1919. Serial No. 285,101.

To aZZ whom it may concern:

Be it known that I, WILLIAM M. WIL- LIAMS, residing at Tonopah, in the county of Nye and State of Nevada, have invented a new and Improved Drill-Bit-Pulling Device, of which the following is a specification.

This invention has special reference to an improved device or tool to be used in connection with mines and particularly for pulling drills out of holes when they become stuck or fast by the cuttings in the holes and which usually works behind the drill during the operation of drilling.

Primarily, this invention has for its object to provide a simple and inexpensive device capable of being readily applied to the drill shank, and which can be quickly, expeditiously and effectively operated to pro duce the desired results.

With other objects in view that will hereinafter appear, my invention embodies the peculiar features of construction and novel arrangement of the parts hereinafter explained, specifically pointed out in the appended claims and illustrated in the accompanying drawing, in which:

Figure 1 is a perspective View. of my invention, the same being shown as applied for use.

Fig. 2 is a vertical section of the same applied for use, the dotted lines indicating the manner in which the lever is operated for effecting the desired pull on the drill shank. I

Fig. 3 is a horizontal section of the same taken substantially on the lines 33 on Fig. 2, the operative movement of the lever being indicated in dotted lines, and

Fig. 4c is a perspective view of the several parts that constitute my drill bit pulling device.

In the drawing, 1 designates a tubular body, the lower end of which is adapted for being seated over thehole 2 in which the drill is held fast, and the said body 1,.when operatively applied, fits over the exposed part of the drill shank, as is clearly shown in Fig. .1, v

64: to provide At diametrically opposite sides, the tubular body 1 has vertical slots 33, one of which opens through the upper or outer end of the body 1 and has its lowermost or inner end terminating with a supplemental slot 30 of reduced width, the purpose of which will presently appear.

One edge of each of the slots 3 has ratchet teeth 31'32 and the said teeth are arranged on alternate edges of the slots, i. e., the teeth 32, at one side, project relatively in a direction opposite to the projection of the teeth 31 at the opposite side, the reason for which will be presently fully stated.

4 designates the drill bit and 40the drill shank. 5 denotes a collar slidable over the outer or free end of the drill shank to which it is fixedly clamped at the desired'positions on the shank, by a wedge key 6.

7 designates, what I lever and the same includes a central ringlike body portion 60 that fits around the shank when the parts are operatively applied and which, at diametrically opposite edges, has concaved seats 62 in Which are received short oppositely disposed radial journals -50 on the collar 5.

Lever 7 also includes a handle 70-and a pair of oppositely disposed bearing portions 63, each of which has a beveled face for a proper engagement or seating of the opposite lever portionswith the ratchet edges formed in their coincident slots 3-3.

By reason of the peculiar construction and novel arrangement of the parts so far described and shown in the drawing, it is apparent that when a drill bit becomes stuck or fastened in the 7 hole being drilled, all that is necessary is to slip one end 65 of the lever into the slot at one side of the body 1 after passing the ring portion of the lever over the outer or free end of the drill shank and then passing the handle end of the lever down through the upper or open end of the slot on the other side of the body until it seats in the supplemental slot 30, as shown.

The collar 5 is then applied to the bit shank and is made fast thereto by the wedge term, an operating teeth at one side 'bein key and it is held with the trunnions 50 engaging the concaved seats in the ringlike portion of the lever.

When thus, positioned, the tubular body with theuattached parts is capable of turning back with the drill while pulling the same through the; cuttings. To pull the drill back or loosen it from its clogged orjammed position in the hole, the free end of the lever 7 is lifted to engage, say, the first notch at the bottom of the slot, at one side, after which, with the said free end acting as a fulcrum, the handle end of the lever is liftedup froih-itsbase or supplemental slot and shifted laterally, asindicated by the dotted line a on the drawing, so as to seat in the first notch in the slot 8 at that side of the casing or'b'ody.

The free end of the lever is then lifted up into the next notch at that end, while the handle is removed from its first notch and swung upwardly or outwardly, see the arrow :0, and as the front end of the lever at this time acts as a fulcrum, the working of the handle end of the lever tends to pull orlift the drill rod, it being understood that during the pull or lifting operations of the drill shank, the "said shank and drill vmaintain their true position within the hole being drilled and are practically under no lateral strain, since the rockable bearing of the clamping collar on the ring portion of the lever prevents it. i V 1 After the front end of the lever has been again shifted to "engage the next upperone of the adjacent notches, the handle end of the lever is again swung over to engage with its next adjacent upper notch and the Several operations of the lever, as ex lained, are repeated until the desired pul "on the shank andbit is effected.

1. A drill pulling device of the character described, comprising a frame adapted for being seated over the hole being drilled, the saidframe having a pair of diametrically opposite longitudinal guide slots, one

of the edges of each slot having ratchet teeth, acollar for engaging the drill, means [for clamping the collar onto the said drill and a lever having a portion that forms a seat for the collar and bearing I portions laterally shiftable in the'guide slots of the frame and adapted for being 'jshi-ftably moved to engage their respective adjacent ratchet teeth of the frame.

'2. A drill pulling device of the character described,comprising a frame adapted for being seated overthe hole being'drilled, the Said frame having a pair of diametrically opposite longitudinalguide slots, one of the edgeso'f each slot having ratchet teeth, the g alternately arranged relatively to the teet "at "the other side, a

device which comprises collar for-engaging the drill, means for clamping the collar onto the said drill and a lever having a portion that forms a seat for the collar and having bearingportionslaterally shiftable in the guide slots ofthe frame and adapted for being shiftably moved to their respective adjacent ratchet t th, of, t e fr 3. A device for pulling drill bits out of holes in which they become chocked, said device comprising a suitable frame adapted for being seated around the drill bit shankand over the hole being drilled, said frame having diametrically opposite longitudinally extending guide slots, one of the slots ppening through the outer end of the said. frame, each of the slots having ratchet teeth along one edge, a lever including an apertured body portion adapted for slipping over the drill shank, the said leverhaving a handle extension at one end and a front extension, said handle portion and front extension being removably insertible through the longitudinal slots'in the frame and having portions for engaging the ratchet teeth i'nthe "edges of their respective slots, ai'collar'and meansifor clamping the collar on the'drill shank, said collar being adapted to seat on the body portion of the lever;

4. A device for holes in which they becomechocked, said device comprising asuitable frame adapted for being seated aroundthe 'drillzbit shank and over the hole being drilled, said frame having diametrically opposite longitudinally extending vguide slots, one of the slots opening through the outer end of the said frame, each of theslots having ratchet teeth along one edge, a lever including an aperratchet teeth in the edges of their respective slots, a collar and means for clamping the collar'on the drill shank, said collar havlng a pair of oppositely projected radial ftrunnions and the body portion of the le er havlng concaved seats for recelvmg the said 'trunnlons.

V 5, Asa new article, drill hanktiiuing having a pair of diametrically opposite longltudinal slots, one of the said slots open- I:gng through the upper end of the said memextended concaved seats, the said lever'also pulling drill bits of :t'ured body portion adapted for slippinga tubular ;member each of the slots having one edgefformed with ratchet teeth, the said tooth edges-being alternately disposed, a lever that inportion adapted to fit overfthe V drill shank and having a including a front member adapted for eX- teeth in the saidslot, a collar and means for tending through the slot at one side and eoclamping the collar on the drill shank, said acting with the teeth at the said side and a collar having radial trunnions for seating in 10 handle extension at the other end adapted the conoaved seats in the ring portion of the 5 for being slipped down through the open lever.

end of the slot at the other side of the tubular member and for eoaeting With the ratchet WILLIAM M. WILLIAMS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

